300M V6-3.5L VIN G (2000)
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Intake Air Temperature Sensor
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Engine Coolant Temperature
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Engine Speed (Crankshaft Position Sensor)
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Exhaust Gas Oxygen Content (heated oxygen sensors)
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Manifold Absolute Pressure
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Throttle Position
The PCM adjusts engine idle speed through the idle air control motor based on the following inputs.
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Brake Switch
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Engine Coolant Temperature
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Engine Speed (Crankshaft Position Sensor)
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Park/Neutral (transmission gear selection)
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Transaxle Gear Engagement
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Throttle Position
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Vehicle Speed (from Transmission Control Module)
The PCM adjusts ignition timing based on the following inputs.
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Intake Air Temperature
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Engine Coolant Temperature
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Engine Speed (Crankshaft Position Sensor)
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Knock Sensor
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Manifold Absolute Pressure
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Park/Neutral (transmission gear selection)
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Transaxle Gear Engagement
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Throttle Position
The Automatic Shut Down (ASD) and Fuel Pump relays are mounted externally, but are turned on and off by the Powertrain Control Module
through the same circuit.
The camshaft and crankshaft signals are sent to the Powertrain Control Module. If the PCM does not receive both signals within approximately
one second of engine cranking, it deactivates the ASD and fuel pump relays. When these relays are deactivated, power is shut off to the fuel
injectors, ignition coils, fuel pump and the heating element in each oxygen sensor.
The PCM contains a voltage converter that changes battery voltage to a regulated 8.0 volts. The 8.0 volts power the Camshaft Position Sensor,
Crankshaft Position Sensor and Vehicle Speed Sensor. The PCM also provides a 5.0 volt supply for the Engine Coolant Temperature (ECT)
Sensor, Intake Air Temperature (IAT) Sensor, Manifold Absolute Pressure (MAP) Sensor and Throttle Position (TPS) Sensor.
The PCM engine control strategy prevents reduced idle speeds until after the engine operates for 320 km (200 miles). If the PCM is replaced after
320 km (200 miles) of usage, update the mileage in the new PCM. Use the DRB scan tool to change the mileage in the PCM.
